<template>
    <div>
     <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>数据统计</el-breadcrumb-item>
      <el-breadcrumb-item>数据报表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 2. 为ECharts准备一个具备大小（宽高）的Dom -->
      <div id="echarts_main" style="width: 750px;height:400px;"></div>
    </el-card>

    </div>
</template>
<script>
//导入echarts
import echarts from 'echarts'
//导入lodash库
import _ from 'lodash'

export default {
    data() {
        return {               
        // 需要合并的数据(返回的数据)
            options: {
                title: {
                text: '用户来源'
                },
                tooltip: {
                trigger: 'axis',
                axisPointer: {
                    type: 'cross',
                    label: {
                    backgroundColor: '#E9EEF3'
                    }
                }
                },
                grid: {
                left: '3%',
                right: '4%',
                bottom: '3%',
                containLabel: true
                },
                xAxis: [
                {
                    boundaryGap: false
                }
                ],
                yAxis: [
                {
                    type: 'value'
                }
                ]
            },

        }
    },
    //在dom元素渲染前调用
      created() {},
  // 在页面上的元素，已经被渲染完毕后调用
   mounted() {
    // 3. 基于准备好的dom，初始化echarts实例
    var myChart = echarts.init(document.getElementById('echarts_main'))

     this.$my_http({
         method:"get",
         url:'reports/type/1',
            }).then(res => {
                     
             if(res.data.meta.status != 200){
             return this.$message.error('获取折线图数据失败！')
                 }

                 // 4. 准备数据和配置项
                 console.log(res.data.data)
        const result = _.merge(res.data.data, this.options) //合并对象    
            
        // 5. 展示数据
        myChart.setOption(result)            
        });



  },
  //普通方法
  methods: {}
}
</script>
<style lang="less" scoped>

</style>